Dust collector



June 119, 1923. flASQfiW J. W. BOSSHART ET AL DUST COLLECTOR Filed Oct. 24 1921 INVENTORS WITNESS- M ATTORNEY ltl if g at r a JOHN W. BOSSF '11 AND ELMER W. CKISON, F LOUISVILLE, KENTUCKY.

DUST COLLECTOR.

Application filed tlctober 24, 1821. Serial No.

To all whom it may concern. Be it known that we, JOHN W. BOSSHART and Emma W. MACKISON, citizens of the United States, residing at Louisville, in the county of Jefl'erson and State of Kentucky, have mvented new and useful Improvements in Dust Collectors, of which the following is a specification.

his invention relates to attachments for hot air furnaces and has for its object the provision of a novel straining device adapted to be inserted within a pipe of a hot air furnace whereby to prevent the passage therethrough of dust of all kinds.

important object is the provision of a strainer of this character which is formed of telescopicall engaged sections which cooperate to hol a straming medium such as a wire gauze alone or combined with fabric, this construction permitting separation of the parts so that the straining medium may be removed and replaced or cleaned.

other object is the provision of a device of this character which is formed with an outwardly extending flange engageable with the end of the pipe with which it is associated whereby to prevent the strainer slipping excessively far into the pipe, the innermost telescopic section being also provided with intersecting brace members which make a rigid construction and which also serve as a handle.

additional object is the provision of a device of this character which will be sim le and inexpensive in manufacture, easy to 1nstall, highly eficient in action durable in servlce and a general improvement in the art. With the above and other objects and adin position therein.

e accompanying drawing in w more particularly to the drawings the letter A designates the pipe of a hot air furnace within is adapted to be used. In carry ing out our invention we provide a stramlng device which consists of an outer member rin termed ot' sheettin, galvanized iron or the having one edge formed with an and described and claimed, and il-- '2 is a front elevation of our de- I which our deviceout-turned flange 11. The device further includes an inner ring member 12 which has one end formed with an internally extended flange 13 to which is soldered a disk to 14 of wire screen or the like. lit is further designed in some instances, or if preferred at any time to make use of a sheet of fabric 15 such as cheese cloth or the like which is disposed against the outside of the wire as gauze 14 and which is disposed between the inner and outer ring members whereby to be held stretched taut. o the inner ring member is formed with an outwardly extending flange 16 which engage against the flange 11 of the outer ring member whereby to hold the two ring members in properly assembled relation.

In order to strengthen the structure and to provide means conveniently, we make use of a pair of brace rods 17 which are soldered or otherwise secured at their ends to the inside of the inner ring member and which are arranged in crossed relation as shown. It will be obso served that these brace rods 17 serve to prevent collapsing, bending or warping of not only the inner ring member but also the entire device and that they also serve as dles whereby the whole device may be as easily inserted within or removed from a furnace pipe. Y

From the foregoing description and a study of the drawings it will be apparent that we have thus provided a very sim Is no and consequently inexpensive stre iner which may be readily inserted within the hot air conducting pipe of a furnace for the purpose of excluding all dust and dirt or rather removing the dust and other foreign matter from the air so that the dust cannot get into the building being heated. It will also be observed that when it is necessary the device may be readily removed and the inner and outer rin membersseparated so as to remove the fa ric between the two and also to permit cleaning of the wire gauze.

ile we have shown and described the preferred embodiment of the invention it is of course to be understood that we reserve ms the right to make such changes in the form, construction and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjoined claim. cllfiaving thus described the invention we no In combination with the hot air conducting pipe of a furnace, a. dust removing device comprising an outer ring member formed at one edge with an outwardly extending flange engageable against the outer 6 edge of the pipe,

formed an inner ring member at one edge with an outwardly extending flange engaging said first named an lnternally extending flange,

d to said internally ex- 10 wire gauze soldere and having its other edge formed with a sheet of In testimony whereof we aifix our signatures.

JOHN W. BOSSHART. ELMER W. MACKISON. 

